STRUCT DRM_MSM_VM_BIND(9)

💅 NAME

ok so struct drm_msm_vm_bind — bestie, it's literally the input of &DRM_IOCTL_MSM_VM_BIND 🎀

This page is from the Kernel API Manual, section 9, and the whole thing is about struct drm_msm_vm_bind(9). Yes the struct name is the manpage name. Iconic behaviour, no notes 💖

✨ SYNOPSIS

struct drm_msm_vm_bind {
    __u32 flags;
    __u32 nr_ops;
    __s32 fence_fd;
    __u32 queue_id;
    __u64 in_syncobjs;
    __u64 out_syncobjs;
    __u32 nr_in_syncobjs;
    __u32 nr_out_syncobjs;
    __u32 syncobj_stride;
    __u32 op_stride;
    union {
      struct drm_msm_vm_bind_op op;
      __u64 ops;
    };
 };

ok look at all those fields 💀 every single one of them is here, I did not skip a single line, we are thorough in this house ✨

🎀 MEMBERS

• flags — an in param, and it's a bitmask of MSM_VM_BIND_x. Bitmask bestie, so it's giving "combine your faves" 🌈
• nr_ops — the number of bind ops in this ioctl. so like, how many ops are we doing? that's the number 🔥
• fence_fd — the in/out fence fd, see MSM_VM_BIND_FENCE_FD_IN/OUT. it's doing both jobs, main character energy fr fr 👑
• queue_id — an in param, the submitqueue id. which queue are we talking to, that's the one 💅
• in_syncobjs — an in param, a ptr to array of drm_msm_syncobj 🦋
• out_syncobjs — an in param, a ptr to array of drm_msm_syncobj 🦋 (yes it's also a pointer to an array, twinning with in_syncobjs, periodt)
• nr_in_syncobjs — an in param, number of entries in in_syncobj. that's how many there are, ngl 🔢
• nr_out_syncobjs — an in param, number of entries in out_syncobj. again: the count 🌸
• syncobj_stride — an in param, the stride of the syncobj arrays. stride betch 💃
• op_stride — the sizeof each struct drm_msm_vm_bind_op in ops. lowkey important for walking that array 🧚
• {unnamed_union} — it's anonymous. no name. unnamed. mysterious. we love a mystery 🙈
  • op — used if num_ops == 1. one single op, solo outing 💜
  • ops — userptr to array of drm_msm_vm_bind_op if num_ops > 1. now you're a group chat 🔥

heads up bestie: the union is anonymous, so you just reach straight in there. no silly middle name needed ✨

🔍 SEE ALSO

• Kernel file ./include/uapi/drm/msm_drm.h
• struct drm_msm_vm_bind_op(9) — go read that one next, it's the sequel 🫶

ok that's the whole page, you ate that 💖 this came from the Kernel file ./include/uapi/drm, dated October 2026, and it's the struct drm_msm_vm_bind(9) page — go forth and bind your VM, bestie, slay 🦋✨💅